You can register up to 10 email addresses on your BlackBerry handset.
If you have a new device the set-up wizard will appear on the screen when they switch on your device. The email set-up instruction is also in the tutorial is in the set-up wizard. Otherwise you can use the following method:
From the Home screen select the ‘Set-up’ folder and ‘E-mail Settings/Accounts’.
Then you can either:
Select the type of email account you want to set up, for example, Yahoo, AOL.
Then enter your existing Internet Service Provider email address and password and agree to the terms and conditions.
"Create a BlackBerry® E-mail Address"
Create a password.
Your email is now set up.
Once the first email address has been entered, or the BlackBerry email address has been created, you can then add additional email addresses by clicking 'Set up another email account’ and follow the above steps again.